Unverified Commit 5865ef7f authored Jan 09, 2025 by openeuler-ci-bot Committed by Gitee Jan 09, 2025

!14582 jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree

Merge Pull Request from: @ci-robot 
 
PR sync from: Yongjian Sun <sunyongjian1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/VNNQE5YXUOFTWVPW5QR46EJGWVYI73F3/ 
 
https://gitee.com/src-openeuler/kernel/issues/IBEAOK 
 
Link:https://gitee.com/openeuler/kernel/pulls/14582

 

Reviewed-by: Li Nan <linan122@huawei.com>
Signed-off-by: Li Nan <linan122@huawei.com>

parents b762e8dd 77b53030

fs/jfs/jfs_dmap.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2955,6 +2955,9 @@ static void dbAdjTree(dmtree_t *tp, int leafno, int newval, bool is_ctl)
	/* bubble the new value up the tree as required.		/* bubble the new value up the tree as required.
	*/		*/
	for (k = 0; k < le32_to_cpu(tp->dmt_height); k++) {		for (k = 0; k < le32_to_cpu(tp->dmt_height); k++) {
			if (lp == 0)
			break;

	/* get the index of the first leaf of the 4 leaf		/* get the index of the first leaf of the 4 leaf
	* group containing the specified leaf (leafno).		* group containing the specified leaf (leafno).
	*/		*/